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Date:   1/22/2004                        COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         Page:      1
Time:     13:09                                      2003 Property Value Study                                          Rpt: VAL7000
                                                     Confidence Interval Detail
                                                        031-903-031 Harlingen

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                                                              (1)                         (2)
  (1)                  (1)                        (1)       Stratum         (1)         Sample
Stratum              Category                 Local Value    Ratio      State Value      Size
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  1      A  - Single-family Residences        287,480,522     .9026     318,502,683       47
  2      A  - Single-family Residences        287,480,522     .9559     300,743,302       50
  3      A  - Single-family Residences        287,480,522     .9272     310,052,332       49
  4      A  - Single-family Residences        287,480,522     .9527     301,753,461       50
  5      F  - Commercial Real                 123,659,233     .9646     128,197,422       13
  6      F  - Commercial Real                 123,971,373     .9427     131,506,707        7
  7      F  - Commercial Real                 125,584,093     .9855     127,431,855        7
  8      F  - Commercial Real                 121,058,071     .9936     121,837,833        5
  9      L  - Commercial Personal              56,717,437    1.0278      55,183,340        7
 10      L  - Commercial Personal              56,669,756     .8616      65,772,697        9
 11      L  - Commercial Personal              57,671,072    1.0677      54,014,304        7
 12      L  - Commercial Personal              55,430,030     .9761      56,787,245        5

Random Totals:                              1,870,683,153             1,971,783,181      256
 Cat J Exception Values:                                0                         0
 Cat D1 Exception Values:                       6,148,691                 6,715,541
 Other Exception Values:                                0                         0
Exception Totals(3):                            6,148,691                 6,715,541
Test Values(4):                             1,876,831,844             1,978,498,722

Margin of Error Percent:                                    5.0000000
Margin of Error Value:                                     98,924,936
Confidence Interval Values:
  Local Test Value:                                     1,876,831,844  (Outside of ConfidenceInterval Limits)
  State Lower Limit:                                    1,879,573,786  (State Test Value Minus Margin of Error Value)
  State Upper Limit:                                    2,077,423,658  (State Test Value Plus Margin of Error Value)
Value Assigned (5):                                     2,181,734,419  (See ISD Summary Worksheet)


Sources:

(1) See Stratified Ratio Detail Report VAL7214.
(2) Number of parcels sampled by staff.
(3) Exception value includes, if tested, D1, the J sample, and any parcels in A,B,C,D,F1,G or L1 marked as exception properties.
(4) Unstudied categories and sub-categories were not included in the test values.
(5) Includes local value of unstudied property categories and sub-categories.